LTC6995HS6-2#WTRMPBF

Programmable Timers And Oscillators Overview

The LTC6995HS6-2#WTRMPBF is a silicon oscillator from the TimerBlox family, designed for long duration timing events. It features a programmable period range of 1.024ms to 9.54 hours (29.1µHz to 977Hz). The device operates on a single supply voltage between 2.25V and 5.5V with a typical supply current ranging from 55µA to 80µA depending on the clock period. Frequency is programmed via a single resistor (RSET) connected to the SET pin, while an internal frequency divider (NDIV) offers eight settings from 1 to 221, selected by the DIV pin voltage. The output provides a 50% duty cycle square wave with CMOS drive capabilities sourcing or sinking up to 20mA.

Programmable Timers And Oscillators Feature Summary

• Programmable period range from 1.024ms to 9.54 hours using a single RSET resistor
• Active-low reset input characteristic of the LTC6995-2 variant
• Configurable output polarity and divider ratio (NDIV) via DIV pin voltage
• AEC-Q100 qualified for automotive applications with –40°C to 125°C operating temperature

Programmable Timers And Oscillators Applications

• Power-on reset timers
• Watchdog timers
• Long time one-shot pulse generation
• Periodic wake-up calls in low-power systems
• Heartbeat timers for system monitoring

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix #WTRMPBF indicates automotive grade qualification and mini tape-and-reel packaging. Confirm the HS6 designation corresponds to the high-temperature industrial range (-40°C to 125°C) and TSOT-23 package. Ensure compatibility with active-low reset logic required by the -2 version before procurement.

Programmable Timers And Oscillators Selection Notes

Select the LTC6995-2 variant when an active-low reset signal is required. Use the DIV pin resistor network to set the desired NDIV value between 1 and 221, which also determines output polarity. Calculate RSET based on the target frequency using the formula tOUT = NDIV * RSET / 50kΩ * 1.024ms. Ensure RSET tolerance is within 0.5% for optimal frequency accuracy.

Programmable Timers And Oscillators Part Context

This component belongs to the Analog Devices TimerBlox family of silicon timing devices. The LTC6995 series includes variants with different reset polarities (-1 for active-high, -2 for active-low), temperature grades (C, I, H, MP), and packages (DCB, S6). The HS6-2#WTRMPBF specifically denotes the high-temp, active-low, automotive-grade version in a thin TSOT-23 package.

Programmable Timers And Oscillators Replacement Considerations

Direct replacements include other LTC6995 variants with matching reset polarity and temperature range, such as LTC6995IS6-2#WTRMPBF for commercial grade or LTC6995HS6-2#TRMPBF for non-automotive industrial use. Verify that substitute parts maintain the same SOT-23-6 footprint and electrical characteristics.